condition mean min max ZT0-3 297.6995 168.511 391.089 ZT4-7 159.0985 159.0985 159.0985 ZT8-11 242.493 242.493 242.493 ZT12-15 340.14225 329.4125 350.87199999999996 ZT16-19 370.547 370.547 370.547 ZT20-23 481.59299999999996 481.59299999999996 481.59299999999996